Chuck.



Patenteyi May I, I900.

w. H. 6 0M466 CHUCK.

(Application filed Mar. 6, 1899.)

No Model.)

. fi I written @FFICR- WILLIAM H. YOUNG, OI IIOWELL, INDIANA.

o a o o is.

SPECIFICATION forming part of Letters Eatent No. 648,676, dated May' 1,1900.

' Application filed March 6, 1899. Serial ITO. 708,027. (No model.)

- T all whom, it may concern:

Be it known that I, WILLIAM H. YOUNG, a

citizen of theUnited Statesn'esiding atHoWell,

in the county of Vanderburg and State of In dia'na,.have invented acertain new and useful chuck for holding steam-pipe rings duringtheoperation of grinding steampipe joints in locomotives, of which thefollowing is a description, reference being had to the accompanyingdrawings, forming part of this speci- 'fication.

My invention consists in a novel chuck for holding the rings interposedin the joints of the dry pipe of a locomotive during the operation ofgrinding said joints with the ring.

- I-Ieretofore the common practice has been to either fit a blocktightly in the ring and use it as a handle by which to turn the ring byhand as" the latter is pressed firmly against the joint-surface of thesteain-pipe to grind the joint or else the ring has been secured. in

some manner to the bit end of an ordinary carpenters brace and turned byhand in that manner. My-novel chuck is intended to take the'placc ofthese crude and exeeedinglyslow hand methods now in vogue by enablingthe ring to be readily connected to a device driven by power-such, forinstance, as one of the pneumatic motors now in common use inrailroad-shops. My novel chuck is made readily attachable to anddetachable from such device and is constructed to have the ring to beground readilyattached to and detached from it and has also suchconstruction as to adapt it to receive and hold rings of differentdiameters, all as will be hereinafter more fully ere.

p'lainedin connection with the accompanying drawings, in which- Figure lis a perspective view of a pneumatic motor of familiar type having mynovel chuck connected to it, with the ring mounted upon the chuck inposition for grinding the flat side of the ring. Fig. 2 is alongitudinal vertical section of the chuck, with the ring mounted uponit in reverse position for the grinding of its convex surface.

The same letters of reference are used to indicate identical parts inthe two views.

A represents a rotary pneumatic motor of a well-known type, providedupon itsopposite sides with handles 13 B, the latter of which operatesthe throttle-valve, which controls the admission of motive fluid to themotor from the inlet connection at, C. The spindle of the motor hassecured to it a suitable connectingmeinber D for the attachment of mynew chuck, such connecting memher in the present instance terminating inan exteriorly-threaded end E, adapted to screw into theinteriorly-threaded bore of the head or socket member F of the chuck.This head i is formed upon one end of an exteriorly-threaded spindle G.Projecting radially froin the spindle G, adjacent its end 1*,

are three slotted jaws II, equally distant from.

each other around the spindle and having pivoted on them the rear endsof three longitu'dinally-extendin g blades or arms I, whose oppositeends are shaped, as shown, to form shoulders a, adapted to abut againstthe rear edge of the ring J when mounted upon the chuck and, withcontact-surfaces b, adapted to bear against the inner surface of thering. Mounted upon the spindle G is a device which I term the spreader,consisting of a central hub member K and three radiallyprojectingslotted arms L, corresponding to the three jaws II, in which the rearends of the blades I are pivoted. These blades pass through the slots inthe arms L of the spreader and in the present instance are confinedtherein by transverse pins M, passed through the outer ends of the armsLand closing the outer ends of the slots therein. The arms L brace theouter ends of the blades I and prevent any twisting strain thereon, asWell as also holding the same from either inward or outward movement.The central bore of the hub member K of the spreader, through which thespindle G passes, is not threaded and is of suiiicient diameterto slidefreely over the threads of the spindle longitudinally of the latter.\Vhen the spreader is moved rearward along the spindle, the forward orlefthand ends of the three blades I will be forced outward and away fromthe spindle, and when moved in the opposite direction they will bepermitted to move or be moved inward to-' nut O is then tightened upsecurely against ward the spindle. Threaded upon the spinidle Gimmediately in front (to the left in the drawings) of the hub K is anadjusting'nut N and upon the opposite side of the hub mcm ber K alock-nut O.

vUnder the above-described -(the lock-nut 0 being slackened sufficiently.topermit the movementluntil the surfaces b on the ends of the blades Iare forced tightly against the inner surfaces of the ring J. The

the rear face of the hub K of the spreader, thereby'firmly clamping thelatter between the. nuts N and O and-at the same time looking the partssecurely to the spindle G. The

ring is then ready to be ground, and its forward face is pressed againstthe joint-surface of the steam-pipe and the motive fluid turned onto themotor. When one face of the ring and-abutting joint-surface of thesteam-pipe have thus been ground, the nut N will be slackenedsnfficientlyto release the ring and permitlit to be removed from thechuck and I replaced thereon in reverse position, whereupon the nut willbe tightened up again to grip the ring upon the chuck and-the secondface of the ring and corresponding joint-slur face of the steam-pipo-beground. In this manner and by these means the steam-pipe joints in whichthese ringsare employed may 7 be ground very much more expeditiously andcheaply'than has heretofore been possible with the hand methods referredto, and rings varying indiamcter through a considerable range may behandled by the same chuck,

owing tothc adjustment of-the latter effected by movement of thespreader longitudinally of the spindle. I

chuck-in what -I believe to be its most perfect form and one in which Ihave successfully used it in actual shop practice; butits details may bevaried to some extent while maintaining its mainadvantages; The sameadjustment of the blades Lof the, chuck might be effected bytheemployment of a spreader secured in fixed position npontho'spindle l;and by pivoting the rear ends of said blades in jaws H, longitudinallyadjustable of .the spindle and adapted to be secured thereon in'dilfcrent adjusted positions by nuts corresponding to the nuts N and O,the spreader thus becoming the fixed inemb'erof the chuck and thepivoting jaws the movable member; but I very much prefer to employ thearrangement inthis respect which has been illustrated anddescribed. a

construction and arrangementof parts the mode of use and,

While my new chuck has been designed for the specific purpose abovedescribed, my

invention of course contemplates its use for any other purpose towhiehit is adapted.

Having thus fully described my invention,

I claim- 1. The herein-described chuck, composed of the central spindle,the blades or armspivoted at one end to said spindle and movable towardand. from the spindle at their opposite ends, a device slidably mountedon said spindle for forcing the free ends of said armsaway from thespindle and having a part engaging and bracing each blade, and meansmovable along said spindle and adapted to lock said forcing device inadjusted po sitions, substantially as described.

2. The herein-described chuck comprising I a central spindle, blades orarms pivoted at one end tosaid spindle and at their oppositeprovidedwith shoulders and contact-surfaces to engage thering', a deviceslidably mounted on the spindle for forcing the free ends of said armsoutwardly against the inner sur-'- face of the ring and having a partengaging and bracing each arm, and means movable along said spindle andadapted to lock said forcing means in adjusted positions, substantiallyas described.

ed portion, the blades or arms pivoted-at one end thereto and movabletoultrd and. from the spindle at their opposite ends, means.

mounted upon and-freely slidablc longitudi- .85 ends movabletowardandfrom the spindle and 3. The herein-described chuck, composed of thecentral spindle having ascrew-tlireadnally of the screw-threaded portionof the spindle for forcing the free ends of the arms outward, andlocking means detached from the said forcing means and having threadedengagement with the said spindle cooperating therewith and mounted uponthe spindle for locking the free ends of the arms in outerposition. l I

4, The herein-described chuck, composed of the central spindle theblades or arms I have illustrated and described my now having fixedpivot connections with the spindle at their rear ends and movable towardand from thes'pindlc at their'opposite ends, the spreader slidablymounted upon the spindle and engaging the arms, and the adjusting andlocking nuts one 611 'eacn-stde ofthe spreader and threaded upon thespindle and coi'mcraiing-with the spreader.

5. The herein-described chuck, composed of the central spindleG, thebladesorarms I pivoted at their rear ends to said spindle, the spreadercomposed of the hub member K slidabl y mounted upon the spindle Gandhaving the radial arms L engaging the blades I, and the nuts N Odetached from and one on each side of and codperating with the hubmember K of the spreader.

6. The herein-describedchuck, composed of the central spindle G'provided near one end with the radial jaws H, the blades Ipiv- Lthrough which pass the blades 1, and the oted at their rear ends in thejaws H and at adjusting and locking nuts N O eoeperating their oppositeends shaped to form the shoul- 1 with the hub K of said spreader.

ders a and eontaetsurfaces b, the spreader WILLIAM II. YOUNG. 5composedof'thecentralhubmemberKinonnt- Witnesses:

ed upon and movable longitudinally of the WVM. BEDFORD,

spindle G and having the radial slotted arms FRANK S. SOHU.

